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dc.contributor.authorKwon, W
dc.contributor.authorPattle, K
dc.contributor.authorSadavoy, S
dc.contributor.authorHull, CLH
dc.contributor.authorJohnstone, D
dc.contributor.authorWard-Thompson, D
dc.contributor.authorFrancesco, JD
dc.contributor.authorKoch, PM
dc.contributor.authorFuruya, R
dc.contributor.authorDoi, Y
dc.contributor.authorLe Gouellec, VJM
dc.contributor.authorHwang, J
dc.contributor.authorLyo, AR
dc.contributor.authorSoam, A
dc.contributor.authorTang, X
dc.contributor.authorHoang, T
dc.contributor.authorKirchschlager, F
dc.contributor.authorEswaraiah, C
dc.contributor.authorFanciullo, L
dc.contributor.authorKim, KH
dc.contributor.authorOnaka, T
dc.contributor.authorKönyves, V
dc.contributor.authorKang, JH
dc.contributor.authorLee, CW
dc.contributor.authorTamura, M
dc.contributor.authorBastien, P
dc.contributor.authorHasegawa, T
dc.contributor.authorLai, SP
dc.contributor.authorQiu, K
dc.contributor.authorBerry, D
dc.contributor.authorArzoumanian, D
dc.contributor.authorBourke, TL
dc.contributor.authorByun, DY
dc.contributor.authorChen, WP
dc.contributor.authorChen, HRV
dc.contributor.authorChen, M
dc.contributor.authorChen, Z
dc.contributor.authorChing, TC
dc.contributor.authorCho, J
dc.contributor.authorChoi, Y
dc.contributor.authorChoi, M
dc.contributor.authorChrysostomou, A
dc.contributor.authorChung, EJ
dc.contributor.authorCoudé, S
dc.contributor.authorDai, S
dc.contributor.authorDiep, PN
dc.contributor.authorDuan, Y
dc.contributor.authorDuan, HY
dc.contributor.authorEden, D
dc.contributor.authorFiege, J
dc.contributor.authorFissel, LM
dc.contributor.authorFranzmann, E
dc.contributor.authorFriberg, P
dc.contributor.authorFriesen, R
dc.contributor.authorFuller, G
dc.contributor.authorGledhill, T
dc.contributor.authorGraves, S
dc.contributor.authorGreaves, J
dc.contributor.authorGriffin, M
dc.contributor.authorGu, Q
dc.contributor.authorHan, I
dc.contributor.authorHatchell, J
dc.contributor.authorHayashi, S
dc.contributor.authorHoude, M
dc.contributor.authorInoue, T
dc.contributor.authorInutsuka, SI
dc.contributor.authorIwasaki, K
dc.contributor.authorJeong, IG
dc.contributor.authorKang, M
dc.contributor.authorKaroly, J
dc.contributor.authorKataoka, A
dc.contributor.authorKawabata, K
dc.contributor.authorKemper, F
dc.contributor.authorKim, KT
dc.contributor.authorKim, G
dc.contributor.authorKim, MR
dc.contributor.authorKim, S
dc.contributor.authorKim, J
dc.contributor.authorKirk, J
dc.contributor.authorKobayashi, MIN
dc.contributor.authorKusune, T
dc.contributor.authorKwon, J
dc.contributor.authorLacaille, K
dc.contributor.authorLaw, CY
dc.contributor.authorLee, CF
dc.contributor.authorLee, YH
dc.contributor.authorLee, H
dc.contributor.authorLee, JE
dc.contributor.authorLee, SS
dc.contributor.authorLi, D
dc.contributor.authorLi, D
dc.contributor.authorLi, HB
dc.contributor.authorLin, SJ
dc.contributor.authorLiu, SY
dc.contributor.authorLiu, HL
dc.contributor.authorLiu, J
dc.contributor.authorLiu, T
dc.contributor.authorLu, X
dc.contributor.authorMairs, S
dc.contributor.authorMatsumura, M
dc.date.accessioned2022-02-23T14:00:24Z
dc.date.available2022-02-23T14:00:24Z
dc.date.issued2022
dc.date.submitted2021-03-10
dc.identifier.issn0004-637X
dc.identifier.otherapjac4bbe
dc.identifier.otherac4bbe
dc.identifier.otheraas30911
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/334364
dc.description.abstract<jats:title>Abstract</jats:title> <jats:p>We present 850 <jats:italic>μ</jats:italic>m polarimetric observations toward the Serpens Main molecular cloud obtained using the POL-2 polarimeter on the James Clerk Maxwell Telescope as part of the B-fields In STar-forming Region Observations survey. These observations probe the magnetic field morphology of the Serpens Main molecular cloud on about 6000 au scales, which consists of cores and six filaments with different physical properties such as density and star formation activity. Using the histogram of relative orientation (HRO) technique, we find that magnetic fields are parallel to filaments in less-dense filamentary structures where <jats:inline-formula> <jats:tex-math> <?CDATA ${N}_{{{\rm{H}}}_{2}}\lt 0.93\times {10}^{22}$?> </jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mi>N</mml:mi> </mml:mrow> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi mathvariant="normal">H</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> </mml:msub> <mml:mo>&lt;</mml:mo> <mml:mn>0.93</mml:mn> <mml:mo>×</mml:mo> <mml:msup> <mml:mrow> <mml:mn>10</mml:mn> </mml:mrow> <mml:mrow> <mml:mn>22</mml:mn> </mml:mrow> </mml:msup> </mml:math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjac4bbeieqn1.gif" xlink:type="simple" /> </jats:inline-formula> cm<jats:sup>−2</jats:sup> (magnetic fields perpendicular to density gradients), while they are perpendicular to filaments (magnetic fields parallel to density gradients) in dense filamentary structures with star formation activity. Moreover, applying the HRO technique to denser core regions, we find that magnetic field orientations change to become perpendicular to density gradients again at <jats:inline-formula> <jats:tex-math> <?CDATA ${N}_{{{\rm{H}}}_{2}}\approx 4.6\times {10}^{22}$?> </jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mi>N</mml:mi> </mml:mrow> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi mathvariant="normal">H</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> </mml:msub> <mml:mo>≈</mml:mo> <mml:mn>4.6</mml:mn> <mml:mo>×</mml:mo> <mml:msup> <mml:mrow> <mml:mn>10</mml:mn> </mml:mrow> <mml:mrow> <mml:mn>22</mml:mn> </mml:mrow> </mml:msup> </mml:math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjac4bbeieqn2.gif" xlink:type="simple" /> </jats:inline-formula> cm<jats:sup>−2</jats:sup>. This can be interpreted as a signature of core formation. At <jats:inline-formula> <jats:tex-math> <?CDATA ${N}_{{{\rm{H}}}_{2}}\approx 16\times {10}^{22}$?> </jats:tex-math> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"> <mml:msub> <mml:mrow> <mml:mi>N</mml:mi> </mml:mrow> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi mathvariant="normal">H</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>2</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> </mml:msub> <mml:mo>≈</mml:mo> <mml:mn>16</mml:mn> <mml:mo>×</mml:mo> <mml:msup> <mml:mrow> <mml:mn>10</mml:mn> </mml:mrow> <mml:mrow> <mml:mn>22</mml:mn> </mml:mrow> </mml:msup> </mml:math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjac4bbeieqn3.gif" xlink:type="simple" /> </jats:inline-formula> cm<jats:sup>−2</jats:sup>, magnetic fields change back to being parallel to density gradients once again, which can be understood to be due to magnetic fields being dragged in by infalling material. In addition, we estimate the magnetic field strengths of the filaments (<jats:italic>B</jats:italic> <jats:sub>POS</jats:sub> = 60–300 <jats:italic>μ</jats:italic>G)) using the Davis–Chandrasekhar–Fermi method and discuss whether the filaments are gravitationally unstable based on magnetic field and turbulence energy densities.</jats:p>
dc.languageen
dc.publisherAmerican Astronomical Society
dc.subject320
dc.subjectInterstellar Matter and the Local Universe
dc.titleB-fields in Star-forming Region Observations (BISTRO): Magnetic Fields in the Filamentary Structures of Serpens Main
dc.typeArticle
dc.date.updated2022-02-23T14:00:23Z
prism.issueIdentifier2
prism.publicationNameAstrophysical Journal
prism.volume926
dc.identifier.doi10.17863/CAM.81783
dcterms.dateAccepted2022-01-12
rioxxterms.versionofrecord10.3847/1538-4357/ac4bbe
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
dc.contributor.orcidKwon, W [0000-0003-4022-4132]
dc.contributor.orcidPattle, K [0000-0002-8557-3582]
dc.contributor.orcidSadavoy, S [0000-0001-7474-6874]
dc.contributor.orcidHull, CLH [0000-0002-8975-7573]
dc.contributor.orcidJohnstone, D [0000-0002-6773-459X]
dc.contributor.orcidWard-Thompson, D [0000-0003-1140-2761]
dc.contributor.orcidFrancesco, JD [0000-0002-9289-2450]
dc.contributor.orcidKoch, PM [0000-0003-2777-5861]
dc.contributor.orcidFuruya, R [0000-0003-0646-8782]
dc.contributor.orcidDoi, Y [0000-0001-8746-6548]
dc.contributor.orcidLe Gouellec, VJM [0000-0002-5714-799X]
dc.contributor.orcidHwang, J [0000-0001-7866-2686]
dc.contributor.orcidLyo, AR [0000-0002-9907-8427]
dc.contributor.orcidSoam, A [0000-0002-6386-2906]
dc.contributor.orcidTang, X [0000-0002-4154-4309]
dc.contributor.orcidHoang, T [0000-0003-2017-0982]
dc.contributor.orcidKirchschlager, F [0000-0002-3036-0184]
dc.contributor.orcidFanciullo, L [0000-0001-9930-9240]
dc.contributor.orcidKim, KH [0000-0001-9597-7196]
dc.contributor.orcidOnaka, T [0000-0002-8234-6747]
dc.contributor.orcidKönyves, V [0000-0002-3746-1498]
dc.contributor.orcidKang, JH [0000-0001-7379-6263]
dc.contributor.orcidTamura, M [0000-0002-6510-0681]
dc.contributor.orcidBastien, P [0000-0002-0794-3859]
dc.contributor.orcidLai, SP [0000-0001-5522-486X]
dc.contributor.orcidQiu, K [0000-0002-5093-5088]
dc.contributor.orcidArzoumanian, D [0000-0002-1959-7201]
dc.contributor.orcidBourke, TL [0000-0001-7491-0048]
dc.contributor.orcidByun, DY [0000-0003-1157-4109]
dc.contributor.orcidChen, WP [0000-0002-5519-0628]
dc.contributor.orcidChen, HRV [0000-0002-9774-1846]
dc.contributor.orcidChen, Z [0000-0003-0849-0692]
dc.contributor.orcidChing, TC [0000-0001-8516-2532]
dc.contributor.orcidCho, J [0000-0003-1725-4376]
dc.contributor.orcidChrysostomou, A [0000-0002-9583-8644]
dc.contributor.orcidChung, EJ [0000-0003-0014-1527]
dc.contributor.orcidCoudé, S [0000-0002-0859-0805]
dc.contributor.orcidDuan, HY [0000-0002-7022-4742]
dc.contributor.orcidEden, D [0000-0002-5881-3229]
dc.contributor.orcidFissel, LM [0000-0002-4666-609X]
dc.contributor.orcidFranzmann, E [0000-0003-2142-0357]
dc.contributor.orcidFriberg, P [0000-0002-8010-8454]
dc.contributor.orcidFriesen, R [0000-0001-7594-8128]
dc.contributor.orcidFuller, G [0000-0001-8509-1818]
dc.contributor.orcidGledhill, T [0000-0002-2859-4600]
dc.contributor.orcidGraves, S [0000-0001-9361-5781]
dc.contributor.orcidGreaves, J [0000-0002-3133-413X]
dc.contributor.orcidGu, Q [0000-0002-2826-1902]
dc.contributor.orcidHatchell, J [0000-0002-4870-2760]
dc.contributor.orcidHoude, M [0000-0003-4420-8674]
dc.contributor.orcidInoue, T [0000-0002-7935-8771]
dc.contributor.orcidInutsuka, SI [0000-0003-4366-6518]
dc.contributor.orcidIwasaki, K [0000-0002-2707-7548]
dc.contributor.orcidKang, M [0000-0002-5016-050X]
dc.contributor.orcidKataoka, A [0000-0003-4562-4119]
dc.contributor.orcidKawabata, K [0000-0001-6099-9539]
dc.contributor.orcidKemper, F [0000-0003-2743-8240]
dc.contributor.orcidKim, KT [0000-0003-2412-7092]
dc.contributor.orcidKim, G [0000-0003-2011-8172]
dc.contributor.orcidKim, MR [0000-0002-1408-7747]
dc.contributor.orcidKim, S [0000-0001-9333-5608]
dc.contributor.orcidKim, J [0000-0002-1229-0426]
dc.contributor.orcidKirk, J [0000-0002-4552-7477]
dc.contributor.orcidKobayashi, MIN [0000-0003-3990-1204]
dc.contributor.orcidKusune, T [0000-0002-9218-9319]
dc.contributor.orcidKwon, J [0000-0003-2815-7774]
dc.contributor.orcidLacaille, K [0000-0001-9870-5663]
dc.contributor.orcidLaw, CY [0000-0003-1964-970X]
dc.contributor.orcidLee, CF [0000-0002-3024-5864]
dc.contributor.orcidLee, YH [0000-0001-6047-701X]
dc.contributor.orcidLee, H [0000-0003-3465-3213]
dc.contributor.orcidLee, JE [0000-0003-3119-2087]
dc.contributor.orcidLee, SS [0000-0002-6269-594X]
dc.contributor.orcidLi, D [0000-0003-3010-7661]
dc.contributor.orcidLi, HB [0000-0003-2641-9240]
dc.contributor.orcidLin, SJ [0000-0002-6868-4483]
dc.contributor.orcidLiu, SY [0000-0003-4603-7119]
dc.contributor.orcidLiu, J [0000-0002-4774-2998]
dc.contributor.orcidLu, X [0000-0003-2619-9305]
dc.contributor.orcidMairs, S [0000-0002-6956-0730]
dc.contributor.orcidMatsumura, M [0000-0002-6906-0103]
dc.identifier.eissn1538-4357
cam.issuedOnline2022-02-22


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